#  This program is free software; you can redistribute it and/or modify
#  it under the terms of the GNU General Public License as published by
#  the Free Software Foundation; either version 2 of the License, or
#  (at your option) any later version.
#
#  This program is distributed in the hope that it will be useful,
#  but WITHOUT ANY WARRANTY; without even the implied warranty of
#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#  GNU General Public License for more details.
#
#  You should have received a copy of the GNU General Public License
#  along with this program; if not, write to the Free Software
#  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
#  MA 02110-1301, USA.

#  last change: 2017, Jan 4.

import pcbnew
import FootprintWizardBase

# Additional import for QRCode
# see https://github.com/kazuhikoarase/qrcode-generator/blob/master/python/qrcode.py
import qrcode

class QRCodeWizard(FootprintWizardBase.FootprintWizard):
    GetName = lambda self: '2D Barcode QRCode'
    GetDescription = lambda self: 'QR Code barcode generator'
    GetReferencePrefix = lambda self: 'QR***'
    GetValue = lambda self: self.module.Value().GetText()

    def GenerateParameterList(self):
        self.AddParam("Barcode", "Pixel Width", self.uMM, 0.5, min_value=0.4)
        self.AddParam("Barcode", "Border", self.uInteger, 1)
        self.AddParam("Barcode", "Contents", self.uString, 'Example')
        self.AddParam("Barcode", "Negative", self.uBool, True)
        self.AddParam("Barcode", "Use SilkS layer", self.uBool, True)
        self.AddParam("Barcode", "Use Cu layer", self.uBool, False)
        self.AddParam("Barcode", "TypeNumber", self.uInteger, 1)
        
        self.AddParam("Caption", "Enabled", self.uBool, True)
        self.AddParam("Caption", "Height", self.uMM, 1.2)
        self.AddParam("Caption", "Width", self.uMM, 1.2)
        self.AddParam("Caption", "Thickness", self.uMM, 0.12)


    def CheckParameters(self):
        self.Barcode = str(self.parameters['Barcode']['Contents'])
        self.X = self.parameters['Barcode']['Pixel Width']
        self.negative = self.parameters['Barcode']['Negative']
        self.UseSilkS = self.parameters['Barcode']['Use SilkS layer']
        self.UseCu = self.parameters['Barcode']['Use Cu layer']
        self.border = int(self.parameters['Barcode']['Border'])
        self.textHeight = int(self.parameters['Caption']['Height'])
        self.textThickness = int(self.parameters['Caption']['Thickness'])
        self.textWidth = int(self.parameters['Caption']['Width'])
        self.module.Value().SetText(str(self.Barcode))
        self.typeNumber = int( self.parameters['Barcode']['TypeNumber'] )

        # Build Qrcode
        self.qr = qrcode.QRCode()
        self.qr.setTypeNumber(self.typeNumber)
        # ErrorCorrectLevel: L = 7%, M = 15% Q = 25% H = 30%
        self.qr.setErrorCorrectLevel(qrcode.ErrorCorrectLevel.M)
        self.qr.addData(str(self.Barcode))
        self.qr.make()

    def drawSquareArea( self, layer, size, xposition, yposition):
        # creates a EDGE_MODULE of polygon type. The polygon is a square
        polygon = pcbnew.EDGE_MODULE(self.module)
        polygon.SetShape(pcbnew.S_POLYGON)
        polygon.SetWidth( 0 )
        polygon.SetLayer(layer)
        halfsize = size/2
        polygon.GetPolyShape().NewOutline();
        polygon.GetPolyShape().Append( halfsize+xposition, halfsize+yposition )
        polygon.GetPolyShape().Append( halfsize+xposition, -halfsize+yposition )
        polygon.GetPolyShape().Append( -halfsize+xposition, -halfsize+yposition )
        polygon.GetPolyShape().Append( -halfsize+xposition, halfsize+yposition )
        return polygon


    def _drawPixel(self, xposition, yposition):
        # build a rectangular pad as a dot on copper layer,
        # and a polygon (a square) on silkscreen
        if self.UseCu:
            pad = pcbnew.D_PAD(self.module)
            pad.SetSize(pcbnew.wxSize(self.X, self.X))
            pad.SetPosition(pcbnew.wxPoint(xposition,yposition))
            pad.SetShape(pcbnew.PAD_SHAPE_RECT)
            pad.SetAttribute(pcbnew.PAD_ATTRIB_SMD)
            pad.SetName("")
            layerset = pcbnew.LSET()
            layerset.AddLayer(pcbnew.F_Cu)
            layerset.AddLayer(pcbnew.F_Mask)
            pad.SetLayerSet( layerset )
            self.module.Add(pad)
        if self.UseSilkS:
            polygon=self.drawSquareArea(pcbnew.F_SilkS, self.X, xposition, yposition)
            self.module.Add(polygon)


    def BuildThisFootprint(self):
        if self.border >= 0:
            # Adding border: Create a new array larger than the self.qr.modules
            sz = self.qr.modules.__len__() + (self.border * 2)
            arrayToDraw = [ [ 0 for a in range(sz) ] for b in range(sz) ]
            lineposition = self.border
            for i in self.qr.modules:
                columnposition = self.border
                for j in i:
                    arrayToDraw[lineposition][columnposition] = j
                    columnposition += 1
                lineposition += 1
        else:
            # No border: using array as is
            arrayToDraw = self.qr.modules

        # used many times...
        half_number_of_elements = arrayToDraw.__len__() / 2

        # Center position of QrCode
        yposition = - int(half_number_of_elements * self.X)
        for line in arrayToDraw:
            xposition = - int(half_number_of_elements * self.X)
            for pixel in line:
                # Trust table for drawing a pixel
                # Negative is a boolean;
                # each pixel is a boolean (need to draw of not)
                # Negative | Pixel | Result
                #        0 |     0 | 0
                #        0 |     1 | 1
                #        1 |     0 | 1
                #        1 |     1 | 0
                # => Draw as Xor
                if self.negative != pixel: # Xor...
                    self._drawPixel(xposition, yposition)
                xposition += self.X
            yposition += self.X
        #int((5 + half_number_of_elements) * self.X))
        textPosition = int((self.textHeight) + ((1 + half_number_of_elements) * self.X))
        self.module.Value().SetPosition(pcbnew.wxPoint(0, - textPosition))
        self.module.Value().SetTextHeight(self.textHeight)
        self.module.Value().SetTextWidth(self.textWidth)
        self.module.Value().SetThickness(self.textThickness)
        self.module.Reference().SetPosition(pcbnew.wxPoint(0, textPosition))
        self.module.Reference().SetTextHeight(self.textHeight)
        self.module.Reference().SetTextWidth(self.textWidth)
        self.module.Reference().SetThickness(self.textThickness)
        self.module.Value().SetLayer(pcbnew.F_SilkS)
        
        self.module.Value().SetVisible(False)
        self.module.Reference().SetVisible(False)

QRCodeWizard().register()
